<div id="search">
  <g:form url='[controller: "searhLayout", action: "index"]' id="searchableForm" name="searchableForm" method="get">
    <g:textField name="q" value="${params.q}" />
    <g:select name="sb" from="${['all','user','webboard','problem']}"/>
    <input type="submit" value="Search" />
  </g:form>
</div>